Welcome to the CNC world where anything is possible depending on the programmer`s skill first things first when you just bought a CNC router, 1mm=1mm on all axis, so you need to calibrate it first on the X,Y,Z after that test route a 25.4mm square, 25.4mm circle, when all procedures are all set and you are contented with the cut it`s time to proceed anything you want it`s either you want to cut, engrave, drill, reface all those sorts of things